, including the admiral ' s staff . the ship was powered by two vertical triple @ - @ expansion steam engines built by hum ##ph ##rys , ten ##nant , each driving one propeller , using steam generated by 25 belle ##ville boilers at a working pressure of 17 @ . @ 03 bar ( 1 @ , @ 70 ##3 k ##pa ; 247 psi ) . the engines were rated at 15 @ , @ 000 indicated horsepower ( 11 @ , @ 000 kw ) , using forced draught , and designed to reach a top speed of 18 knots ( 33 km / h ; 21 mph ) although asahi reached 18 @ . @ 3 knots ( 33 @ . @ 9
, including the admiral's staff. the ship was powered by two vertical triple @ - @ expansion steam engines built by humphrys, tennant, each driving one propeller, using steam generated by 25 belleville boilers at a working pressure of 17 @. @ 03 bar ( 1 @, @ 703 kpa ; 247 psi ). the engines were rated at 15 @, @ 000 indicated horsepower ( 11 @, @ 000 kw ), using forced draught, and designed to reach a top speed of 18 knots ( 33 km / h ; 21 mph ) although asahi reached 18 @. @ 3 knots ( 33 @. @ 9